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Protein Oligomerization in the Bacterial Outer Membrane (Review)
Molecular Membrane Biology, 2009The formation of homo-oligomeric assemblies is a well-established characteristic of many soluble proteins and enzymes. Oligomerization has been shown to increase protein stability, allow allosteric cooperativity, shape reaction compartments and provide multivalent interaction sites in soluble proteins. In comparison, our understanding of the prevalence
Guoyu Meng, Han Remaut, Gabriel Waksman
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Insertion of Proteins and Lipopolysaccharide Into the Bacterial Outer Membrane [PDF]
Philosophical Transactions of the Royal Society B: Biological Sciences, 2017 The bacterial outer membrane contains phospholipids in the inner leaflet and lipopolysaccharide (LPS) in the outer leaflet. Both proteins and LPS must be frequently inserted into the outer membrane to preserve its integrity. The protein complex that inserts LPS into the outer membrane is called LptDE, and consists of an integral membrane protein, LptD,
Nicholas Noinaj +2 more
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Living on the Edge: Simulations of Bacterial Outer-Membrane Proteins
Biochimica Et Biophysica Acta - Biomembranes, 2016 Gram-negative bacteria are distinguished in part by a second, outer membrane surrounding them. This membrane is distinct from others, possessing an outer leaflet composed not of typical phospholipids but rather large, highly charged molecules known as lipopolysaccharides.
James C Gumbart +2 more
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Protein import and export across the bacterial outer membrane
Current Opinion in Structural Biology, 2021The bacterial outer membrane forms an impermeable barrier to the environment, but a wide variety of substances must cross it without compromising the membrane. Perhaps, the most fascinating transport phenomenon is the import and export of very large protein toxins using relatively small β-barrel proteins residing in the outer membrane.
Jérémy, Guérin, Susan K, Buchanan
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Assembly of β-Barrel Proteins Into Bacterial Outer Membranes
Biochimica Et Biophysica Acta - Molecular Cell Research, 2014 Membrane proteins with a β-barrel topology are found in the outer membranes of Gram-negative bacteria and in the plastids and mitochondria of eukaryotic cells. The assembly of these membrane proteins depends on a protein folding reaction (to create the barrel) and an insertion reaction (to integrate the barrel within the outer membrane).
Trevor Lithgow +2 more
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Role of a Highly Conserved Bacterial Protein in Outer Membrane Protein Assembly
Science, 2003After transport across the cytoplasmic membrane, bacterial outer membrane proteins are assembled into the outer membrane. Meningococcal Omp85 is a highly conserved protein in Gram-negative bacteria, and its homolog Toc75 is a component of the chloroplast protein-import machinery.
Jan Tommassen +2 more
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Assembly of Bacterial Outer Membrane Proteins
2012Various methods that are routinely used to study the subcellular localization of membrane proteins in wild-type Gram-negative bacteria fall short in genetic studies addressing the biogenesis of outer membrane proteins (OMPs). Here, we describe three biochemical methods that can be used in such studies to evaluate the proper assembly of OMPs into the ...
Grijpstra, J. +2 more
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Modeling and simulation of bacterial outer membranes and interactions with membrane proteins
Current Opinion in Structural Biology, 2017The outer membrane (OM) of Gram-negative bacteria is composed of phospholipids in the periplasmic leaflet and lipopolysaccharides (LPS) in the external leaflet, along with β-barrel OM proteins (OMPs) and lipidated periplasmic lipoproteins. As a defensive barrier to toxic compounds, an LPS molecule has high antigenic diversity and unique combination of ...
Dhilon S Patel, Yifei Qi, Wonpil Im
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Bacterial Outer Membrane Protein Analysis by Electrophoresis and Microchip Technology
Expert Review of Proteomics, 2007Outer membrane proteins are indispensable components of bacterial cells and participate in several relevant functions of the microorganisms. Changes in the outer membrane protein composition might alter antibiotic sensitivity and pathogenicity. Furthermore, the effects of various factors on outer membrane protein expression, such as antibiotic ...
Ferenc Kilar +2 more
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Structural Aspects of Bacterial Outer Membrane Protein Assembly
2015The outer membrane of Gram-negative bacteria is predominantly populated by β-Barrel proteins and lipid anchored proteins that serve a variety of biological functions. The proper folding and assembly of these proteins is essential for bacterial viability and often plays a critical role in virulence and pathogenesis. The β-barrel assembly machinery (Bam)
Charles, Calmettes +2 more
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